Fire Emblem: Ankokuryuu to Hikari no Ken

March Prince Altea and a direct descendant of Henri, a warrior who killed the shadow dragon of Medea. However, after the attack of the neighboring Kingdom of Dolua, March is forced to refer to the neighboring Nation of Talisa. His sister Ellis is taken hostage after her father dies, fighting with an evil priest Garnef. With the help of the Altean knight, Jagan, the Talisian Princess Shiida and other March goes to search for a sacred sword, known as Falchion, and a fiery emblem, which will allow him to swing her. Only then can he be able to resist Garnef and the Resurrect Medeus, return the Kingdom of Altea and save his sister. from Wikipedia